| 1911 Encyclopedia Britannica Features the entire 1911 edition online with 29 volumes and articles written by more than 1500 authors. http://www.1911encyclopedia.org/ |
| Catalanian Hiperenciclop่dia Contains the most comprehensive collection of terms related to Catalonia extracted from the Gran Enciclop่dia Catalana. http://www.catalanencyclopaedia.com/ |
| Cyclepedia Motorcycling information, repair manuals, technical data, and useful statistics organized by manufacturer. http://www.cyclepedia.com/ |
| Eb.com Provides complete text of Encyclopaedia Britannica with search capabilities, related links, and multimedia enhancements. http://www.eb.com/ |
| Encyclopedia Britannica Offers news, links, and access to abbreviated encyclopedia entries. http://www.britannica.com/ |
| Encyclopedia of Canadian Theatre Thorough coverage of present and past theater news and productions. http://www.canadiantheatre.com/ |
| EngineersWorldwide.com Worldwide directory for the design, engineering and construction industries. http://www.engineersworldwide.com/ |
| How Stuff Works Articles explain how hundreds of things work, from elements of the human body to space-age technology. http://www.howstuffworks.com/ |
| Information Please Offering millions of useful and interesting facts on a wide range of topics. http://www.infoplease.com/ |
| Informationsphere.com Free online encyclopedia that allows users to submit their own articles for inclusion in its database. http://www.informationsphere.com/ |
| Infovisual.info Where words are defined as pictures, for leaning the exact names of objects. http://www.infovisual.info/ |
| Literary Encyclopedia Features author biographies, text profiles, timelines, and glossary of literary terms. http://www.LitEncyc.com/ |
| Peakware World Mountain Encyclopedia Includes reference information such as height, location, first ascent data, links, and many more. http://www.peakware.com/ |
| Platonic Realms Math quotes, mini-texts and definitions. http://www.mathacademy.com/ |
| Probert Encyclopaedia Reference resource containing entries addressing various life topics. http://www.probertencyclopaedia.com/ |
| Quisdom The encyclopedia of trivia. Includes such things as the definitions of acronyms and abbreviations, flags of the world. http://www.quisdom.com/ |
| Rudiments of Wisdom Encyclopaedia As drawn by cartoonist Tim Hunkin. A to Z index of thousands of illustrated topics and themes. http://www.rudimentsofwisdom.com/ |
| The Book of Threes Read and contribute on the both natural and unnatural occurrences or the number three. http://www.threes.com/ |
| The Canadian Encyclopedia Online Searchable full-text version. Features articles, retrospectives, interactive maps, games, and more. http://www.thecanadianencyclopedia.com/ |
| The Probert Encyclopaedia Reference source with several hypertext linked entries covering a broad variety of subjects. http://www.probert-encyclopaedia.co.uk/ |